Portable workbench



FIG. 1 is a perspective view of a portable workbench according to the invention.

FIG. 2 is a right side view of the portable workbench of FIG. 1.

FIG. 3 is a left side view of the portable workbench of FIG. 1.

FIG. 4 is a front view of the portable workbench of FIG. 1.

FIG. 5 is a rear view of the portable workbench of FIG. 1.

FIG. 6 is a top plan view of the portable workbench of FIG. 1; and,

FIG. 7 is a bottom plan view of the portable workbench of FIG. 1.

The broken lines showing features in the drawings are for environmental purposes only and form no part of the claimed design. 

The ornamental design for a portable workbench, as shown and described. 